Talk idly, accepting award? It's not important (2,6)
I believe the answer is:
no matter
'it's not important' is the definition.
(I've seen this before)
'talk idly accepting award?' is the wordplay.
'talk idly' becomes 'natter' (I've seen this before).
'accepting' means one lot of letters goes inside another.
'award?' becomes 'om' (order of merit).
'natter' placed around 'om' is 'NO MATTER'.
(Other definitions for no matter that I've seen before include "Who cares" , "Never mind" , "pure energy?" , "Irrespective of" , "It's of little consequence - what a torment" .)